<!DOCTYPE html>
<html>

	<head>
		<meta charset="utf-8" />
		<title>v-model</title>
		<script src="js/vuejs-2.5.16.js"></script>
	</head>

	<body>
		<div id="app">
			<form action="http://">
				<input type="text" v-model="user.username">
				<input type="text" v-model="user.password">
			</form>
		</div>
	</body>
	<script>
		//view model
		new Vue({
			el:"#app",
			data:{
				user:{
					username:"ylf",
					password:"123"
				}
			}
		});
	</script>

</html>